Specimen transfer under controlled environment conditions, such as temperature, pressure, and gas composition, is necessary to conduct successive complementary in situ characterization of materials sensitive to ambient conditions. The in situ transfer concept is introduced by linking an environmental transmission electron microscope to an in situ X-ray diffractometer through a dedicated transmi...

objective: among the various impression materials, for alginate tear strength is probably more important than the compressive strength. the tear strength is important when an impression involves a mechanical undercut and/or lacks bulk strength to resist tearing. this study evaluated tear strength of iralgin and compared it with tear strength of alginoplast. methods: in this invitro experimental...

Transmission electron microscopy (TEM) is a powerful tool for the investigation of the microstructure of materials, providing crystallographic information and composition at the nanometer scale. For such studies, samples should be transparent to the electron beam. In this review, TEM sample preparation techniques for different classes of materials, such as metals and alloys, multilayered coatin...

Dr Fahmy showed a specimen of carcinoma of the body of the uterus removed from a woman, aged 58, who had one child thirty years ago and whose menopause occurred at the age of 40. The patient was well till three years ago when she noticed the onset of a whitish leucorrhoeal discharge which gradually became more marked. Twelve months ago there was very slight bleeding at irregular intervals for a...

Annular pancreas is a relatively rare congenital diseasecaused by an embryologica1and anatomical disturbance in pancreas It may have no sympforns throughout the life and so occasionally discovered during an unrelevant surgery or autopsy but in most of the cases it shows itself as a duodenal obstruction during the in­fancy and childhood.Very rarely symptoms of the disease my be obser­ved in adul...